Toggle-press



(No Model.) 2 Sheets--Shet 1. O. H. WESTON.

TOGGLE PRESS. No. 276,108. Patented Apr. 17,1883.

(No Model.) 2 Sheets-Sheet 2. O. H. WESTON.

TOGGLE PRESS.

No. 276,108. Patented Apr. 17 1883.

WM ,i

CHARLES H. WESTON, OF YARMOUTH, MAINE.

TOGGLE-PRESS.

SPECIFICATION forming part of Letters Patent No. 276,108, dated April 17, 1883.

Application filed March 14, 1883. (No model.)

, 1 pertains to make and use the same, reference being bad to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specifica tion.

This invention relates to that class of tog-' gle-presses in which the toggles are extended by the pressure of a. cam; and it consists in mechanism for starting and stopping the press, whereby it is alternately opened and closed at each quarter-revolution of the cam, as hereinafter more fully set forth.

In the annexed drawings, illustrating my invention, Figure 1 is an end view of a double toggle-press provided with myimproved mech- 2 anism for starting and stopping the same. Fig. 2 is a side elevation of the same. Fig. 3 is an end elevation. Fig.4 is a plan view, and Fig. 5 represents a plan and section of the stopping-plate.

0 Like letters of reference designate like parts.

The upper plate, A, of the press is adjusted by means of the inclined planes at a, hangers b b,screw-rod 0,and wheel d in the usual manner. The lower plate, B, is raised by the 5 double toggles O G, that are extended byacam, D, on a shaft, E, which also carries a gear, 6, and a stop-plate, F, said shaft passing between the knees of the toggles, and being actuated as hereinafter explained. Motion is commuo nicated to the shaft E by a pinion,f, meshing with the gear 6, said pinion or gear f being mounted on a shaft, G, carrying a gear, g, which meshes with a gear, it, that isljournaled to the frame of the press and in turn meshes 5 with a gear, 17, on the driving-shaft E. This driving-shaft H carries a tight pulley, I, to which power is applied by belting on a hollow loose pulley, K, that is connected with a shipper, L, which is pivoted at I. The shipper L 0 is provided with bearings for a roller, m, or

similar device for catching into one of a series of notches, 0, formed in the face of the stopping-plate F, four of said notches being pref, erably provided, so that the cam-shaft E will be stopped at each quarter-revolution. The roller m, or equivalent catching device,is held to its engagement with the notched stoppingplate F by means of a rod, M, that connects one end of the shipper L with some fixed part of the press, said rod M being-provided with to a spring, 1), or its equivalent.

The press is started by the operator pushing on the end of the rod M, which forces one end of the shipper L outward,disengaging the roller m from the notch in the stopping-plate 6 F, thus leaving the cam-shaft E free to rotate, the other end of the shipper L at the same time forcing the hollow pulley K onto the fast pulley I, carried by the shaft H, thereby causing the same to revolve and transmit motion through the gears '1', h, g,f, and e to the camshaft E with the effect of imparting a partial rotation, to the cam D, so as to actuate the toggles and raise the lower press-plate. As soon as the press is started the rod M is relieved. of pressure, and when the shaft E, with its cam D and stopping-plate F, has made a quarter-revolution, one of the notches 0 in the face of said stopping-plate will be presented to the roller on, carried by the shipper L, and I be forced into engagement therewith by the tension of the spring 1), carried by the rod M, which at the same time causes the shipper L to disengage the pulleys I and K, thus stopping the press at each quarter-revolution of the cam. When the cam D has been rotated sufficiently to again bring its long diameter into a vertical line the weight of the plate B, resting on the toggles, causes them to bend, so as to open thepress.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In a toggle-press, the combination, with the toggles U C, and shaft E, carrying cam I) and notched stopping-plate F, of the shipperbar L and spring-rod M, substantially as described.

2. In a toggle-press, the combination, with the cam-shaft E and stopping-plate F, having I00 notches 0 0; of the shipper-bar L, carrying In testimony whereof I affix my signature in i6 roller mind the rod M, provided with spring presence of two witnesses. 1'2, substantially as described.

3. In a toggle-press, the combination of the CHARLES H. WESTON. 5 plates A B, toggles O G, shaft E, carrying cam D and notched stopping-plate F, the shipper \Vitnesses: L, carrying roller m, the spring-rod. M, pulleys VM. H. WESTON, H A and K, shafts H G, and gears efg h 2', sub- R. HARDING. stantially as described. 

